/*******************************************************************************
 * Copyright (c) 2008-2009 zhang yuexiang.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */ 
package org.xfeep.asura.core.index;

import org.xfeep.asura.core.util.ReadWriteProtectedList;

public interface BackedResultFieldIndex<T> extends FieldIndex<T> {
	
	/**
	 * Find all objects which the field value matches. The returned list is backed by the index, so
	 * changes to it are reflected in the index,  and vice-versa.
	 * @param val
	 * @return all objects which the field value matches
	 */
	public ReadWriteProtectedList<T> matchBacked(Object val);
	
	/**
	 * 
	 * @param val
	 * @return
	 */
	public ReadWriteProtectedList<T> removeBacked(Object val);
	
}
